Author Question: Which of the following is an example of natural goods from an ecosystem? A) Pollination B) Ocean ... (Read 54 times)

gbarreiro · **on:** Jul 16, 2018

Which of the following is an example of natural goods from an ecosystem?

A) Pollination
B) Ocean fish netted for food
C) Control of pest populations
D) Carbon sequestration

Question 2

Current levels of atmospheric carbon dioxide are

A) remaining high but steady.
B) nearly 400 ppm, higher than they have been in 800,000 years.
C) fluctuating greatly but are starting to increase again after a downward trend in the 1990s.
D) decreasing because surplus carbon dioxide is being absorbed by the arctic permafrost.